[ActionScript 3.0] 实现放大镜效果的简单方法

//mc和bgmc是同一对象的不同实例



//mc放大的对象



//bgmc源对象



//mag放大镜



var scale:Number = 1.3;//放大倍数

mc.mask = mag;

mag.startDrag();

mc.scaleX = mc.scaleY = scale;

addEventListener(Event.ENTER_FRAME,onEnter);

function onEnter(e:Event):void

{

    mag.x = mouseX;

    mag.y = mouseY;

    mc.x =  -  scale * mag.x - bgmc.x + mag.x;

    mc.y =  -  scale * mag.y - bgmc.y + mag.y;

}